Chicory/Endive/Radicchio

Codes for pest organisms in chicory/endive/radicchio

Scientific name pathogen ISF	English name	Code	Races/Strains	Level of resistance	Remark
Viruses
Lettuce mosaic virus	Lettuce mosaic	LMV		IR
Beet western yellows virus	Yellows	BWYV		IR
Lettuce big vein virus	Big Vein	LBVV		IR
Tomato spotted wilt virus	Spotted Wilt	TSWV		IR
Endive necrotic virus	Necrotic Virus	ENV
Bacteria
Pseudomonas cichorii	Bacteriosis	Pc
Xhantomonas campestris pv. vitians	Bacterial spot	Xcv
Fungi
Botrytis cinerea	Botrytis	Bc
Sclerotinia minor	Sclerotinia minor	Sm		IR
Sclerotinia sclerotiorum	Sclerotinia major	SS		IR
Rhizoctonia solani	Rhizoctonia	Rs
Altenaria dauci f.sp. endiviae	Antracnose	Ade		IR
Microdochium panattoniana	Antracnose	Mp
Puccinia hieracii var.hieracii f.sp. endiviae	Rust	Phhe
Erysiphe cichoracearum	Powdery Mildew	Ec		IR
Insects
Myzus persicae	Green peach aphid	Mp
Macrosiphum euphorbia	Potato aphid	Me
Nasonovia ribisnigri	Lettuce leaf aphid	Nr
Lyriomyza trifolii	Leafminer	Lt
Pemphigus bursarius	Lettuce root aphid	Pb
Trialeurodes vaporarium	White fly	Tv
Frankliniella occidentalis	Thrips	Fo

HR	highly resistant
IR	intermediate resistant
TSWV	A TSWV resistant variety has resistance to certain non specified strains of Tomato Spotted Wilt Virus

Schedule 2 - Resistance

1. - Terminology and definitions
   
   1. ‘Immunity’ means not subject to attack or infection by a specified pest or pathogen.
   2. ‘Resistance’ is the ability of a plant variety to restrict the growth and development of a specified pest or pathogen and/or the damage they cause when compared to susceptible plant varieties under similar environmental conditions and pest or pathogen pressure. Resistant varieties may exhibit some disease symptoms or damage under heavy pest of pathogen pressure.
      Two levels of resistance are defined:
      
      1. High resistance (HR): plant varieties that highly restrict the growth and development of the
         specified pest or pathogen under normal pest or pathogen pressure when compared to susceptible
         varieties. These plant varieties may, however, exhibit some symptoms or damage under heavy pest
         or pathogen pressure.
      2. Intermediate resistance (IR): plant varieties that restrict the growth and development of the specified pest or pathogen, but may exhibit a greater range of symptoms or damage compared to highly resistant varieties. Intermediately resistant plant varieties will still show less severe symptoms or damage than susceptible plant varieties when grown under similar environmental conditions and/or pest or pathogen pressure.
   3. ‘Susceptibility’ is the inability of a plant variety to restrict the growth and development of a specified pest or pathogen.
      
2. - Information per variety
   Resistances in varieties of our crops will be coded (see coding list at www.enzazaden.com ), unless indicated otherwise. In case a variety is resistant to more than one pathogen, the individual resistance codes will be separated by the symbol ‘/ ‘.
   
   If in a resistance code of a certain variety reference is made to certain strains for which the resistance is claimed this means that no resistance is claimed to other strains of the same pathogen.
   
   If, in a resistance code, no reference is made to strains of the pathogen for which the resistance is claimed, resistance is claimed only to certain not further specified strains of the pathogen and we hereby disclaim any guarantee that the variety will not be infected by the said pathogen.